Radioactive decay in which a beta particle is emitted by an atomic nucleus.
Radioactive disintegration of a nucleus with the accompanying emission of a beta particle: the residual nucleus has one more unit of positive charge after electron emission and one less after positron emission.
A form of radioactive decay caused by the weak nuclear force, in which a beta particle (electron or positron) is emitted. &diamf3; In beta-minus decay , a neutron in an atomic nucleus decays into a proton, an electron, and an antineutrino. The electron and antineutrino are emitted from the nucleus, while the proton remains. The atomic number of the atom is thereby increased by 1. The decay of Carbon-14 into Nitrogen-14, a phenomenon useful in carbon dating, is an example of beta-minus decay. &diamf3; In beta-plus decay , a proton in an atomic nucleus decays into a neutron, a positron, and a neutrino. The positron and neutrino are emitted from the nucleus, while the neutron remains. The atomic number of the atom is thereby reduced by 1. The decay of Carbon-10 to Boron-10 is an example of beta-plus decay.
(physics) A nuclear reaction in which a beta particle (electron or positron) is emitted.